Please take special note of "Issues" on the right side of the website, in the
Navigation section.
Where shall I report said bugs?
At the same time might as well report that the ubuntu logo shows up (upper
right corner of screenshot) of your setup as well.
This should probably be properly reported as a bug so that it can be tracked,
yes?
Why is it that it shows Amazon's results?
What you concerned about is "unity-lens-shopping". But this lens is not
available even in the Trisquel repositories.
http://packages.ubuntu.com/raring/unity-lens-shopping
http://packages.trisquel.info/search?suite=default§ion=all&arch=any&searchon=names&keywords=unity-lens-shopping